Elongated rotatable parallel double jet diffuser



Jan. 2,- 1968 G. J. SWEENEY 35 L ELONGATED ROTATABLE PARALLEL DOUBLE JET DIFFUSER Filed Feb. 15, 1965 4 Sheets-Sheet 1 as' a INVENTOR. GEO/F65 .7. awzwsr ATTORNEY Jan. 2, .1968 G. J. SWEENEY ,3

ELIONGATED ROTATABLE PARALLEL DOUBLE JET DIFFUSER 4 Sheets-Sheet 2 Filed Feb. 15, 1965 INVENTOR- 62' 0/964 .7 JI/[EA/f/ %4%@ Jan. 2, 1968 G. J. SWEENEY 3,361,049

ELONGATED ROTATABLE PARALLEL DOUBLE JET DIFFUSER Filed Feb. 15, 1965 4 Sheets-Sheet 3 A Tramway United States Patent York Filed Feb. 15, 1965, Ser. No. 432,506 15 Claims. (Cl. 98-40) The present invention relates to an elongated rotatable parallel double jet diffuser and it particularly relates to a diffuser construction which will have adjustable ribbon series of elongated parallel cries-cross or parallel jets.

It is among the objects of the present invention to provide a simple extruded air diffuser construction, which may be readily mounted in a wall, ceiling, sill or other part of a room, office, loft or enclosure to permit entry of conditioned or ventilating air and at the same time thorough diffusion of the incoming air.

Another object is to provide an elongated, universal air diffuser construction which will enable ready adjustment in the lateral as well as vertical distribution and thorough diffusion of the conditioning and ventilating air pattern.

Still further objects and advantages will appear in the more detailed description set forth below, it being understood, however, that this more detailed description is given by way of illustration and explanation only and not by way of limitation, since various changes therein may be made by those skilled in the art without departing from the scope and spirit of the present invention.

According to a preferred embodiment of the present invention it has been found most satisfactory to provide a rectangular frame structure which may be positioned flat against the periphery of an opening in a wall or ceiling, which will form a mounting for a cylindertype member having partially circular side bearing members and interior parallel rows of adjustable vane members.

Desirably, the side bearing structures are formed of elongated extrusions, while the interior vane elements are similarly formed of extrusion members and are positioned so that they will be held in any adjusted position and desirably to form an opposing oblique criss-cross pattern.

The ends of the cylinder structure are desirably pivotally mounted so that the barrel structure may be finally positioned at any desired adjusted angular position. The bearing structures desirably have interior flat straight walls and exterior curved bearing walls.

The exterior frame is also desirably formed of integrally elongated extruded light metal or aluminum elements which are joined together by corner angle connection members.

The elongated cylindrical projection device of this application and invention has a wide adaptation. The multiple adjustability of the guide vanes which are set in separate banks is a most important feature. These vanes are independently adjustable in the banks to direct the incoming air in desired directions either in a criss-cross pattern or at the same angles from normal to the wall to an angle of 45. This will enable the outgoing stream of air to be spread in the direction of the axis of the cylinder over an angle of up to 90 to 120 for widest distribution and down to an angle of 15 with a spread of 7 on each side for narrowdistribution. Simultaneously, the angle of projection may be changed from 40 toward the ceiling down to 40 away from the ceiling.

If the vanes were not in two independently adjustable banks, this simultaneous action could not be accomplished;

3,361,049 Patented Jan. 2, 1968 For example by cries-crossing the vanes in the adjacent banks to each other, an excellent diffusing effect is achieved by increasing the turbulence and accelerating the rate of mixing and temperature equalization when diffusion is desirable with cold air in summer time.

Without double independently adjustable banks, there would be only a constant distance of throw, whereas by cries-crossing the vanes, the distance of throw can be decreased to suit conditions in the room and enclosures.

For example, with the device as shown a variation of throw of 40 to feet may be obtained by varying the amount of criss-cross of the vanes in the banks.

This eliminates new duct work to accommodate changed conditions or the shape of the room and the device can be readily applied to various wall and partition changes without new duct work.

The length of the independently adjustable vanes should be about 1 /2 times to 2 /2 times the width of the fiow passages having the parallel side walls.

Variability of the unit is necessary to provide for operational changes of a system between warm air in winter and cold air in the summer. With warm air the vanes are all perpendicular to the axis and parallel to each other for winter utilization.

In summer when diffusion is necessary the vanes are criss-crossed between 10 to 90 depending upon the degree of diffusion or length of throw.

This device will give downward projection in mass of warm air in substantial quantities at greater velocities and thus overcome gravitational tendency of warm air to rise. This is because a large bulk or mass of air may be handled with minimum noise.

For example, streams of air 3%" x 36" in length may be projected at substantial velocities much higher than is possible with grilles. With the device of the present invention there is negligible frictional resistance as compared to a grille and the device may be readily adjusted to high velocity warm or cold air of widely different densities tending to settle or rise or stratify at different rates.

The device will prevent dissipation of warm air for a longer period of time when the vanes are all in their normal parallel condition, but may be set to achieve quick equalization of the temperature of cold air and room air by criss-crossing the vanes for summer utilization.

Generally the devices are placed high on side walls for large enclosures such as for auditoriums, class rooms, factories, restaurants, churches and gymnasiums with the axes parallel to the floor and ceiling.

The guide vanes will guide the incoming air and will not act to deflect the air, giving better and more accurate control over its desired direction.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described, and illustrated in the accompanying drawings, whereinis shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

FIGURE 1 is an outside plan view of the barrel diffuser construction as it may be inserted in a wall or ceiling.

FIG. 2 is an interior plan view of the structure of FIG. 1 from the inside wall or ceiling.

FIG. 3 is a transverse sectional view upon the line 3-3 of FIG. 2, showing the barrel in central position.

FIG. 4 is a transverse sectional view similar to FIG. 3, with the barrel moved to one-stop position.

FIG. 5 is a transverse sectional view, upon the line v55 of FIG. 2, showing the adjustable interior vanes.

FIG. 6 is a transverse fragmentary sectional view upon an enlarged scale, upon the line 6-6 of FIG. 5, showing the individual vane hinge connection.

FIG. 7 is a transverse fragmentary sectional view, taken upon the line 77 of FIG. 5, showing the pivotal connection for the entire barrel.

FIG. 8 is a fragmentary separated perspective view, showing the manner of joining together the corners of the exterior frame construction so as to form a complete rectangular frame.

FIG. 9 is a transverse longitudinal sectional view similar to FIG. 5 but showing an alternative form of end attachment.

FIGS. 10, 11 and 12 show different arrangements that may be obtained of air distribution patterns by adjusting the position of the vanes so as to give streamlined, angular or other desired patterns.

Referring to FIGS. 1 to 5, there is shown an exterior rectangular frame A and an interior rotatable cylinder or barrel B.

The frame A may consist of the elongated side extruded member C and the short end members D.

The barrel structure is formed of the side bearing members 'E and the adjustable vane members F, which also may be extruded structures of a light metal, such as aluminum alloy.

The vane members are mounted by through rod hinge or pivot structures G, extending between the side barrel members E.

The entire barrel on the other hand has pivotal mounts on the end thereof as engaged at H, shown best in FIG. 7, upon the inturned transverse side carrying structures I. (See particularly FIG. 5.)

Referring particularly to FIGS. 3 and 4, the barrel structures E consist of integral extrusions having the onequarter or one-fifth cylindrical portions 20, which extend down to the corners 21 at one side and up to the outstanding stop flange elements 22 at the other side.

The inside flat walls 23 are extruded integrally with the one-quarter or one-fifth cylindrical walls 20, and they extend upwardly as indicated at 24 to form the inside channel 25 through which the conditioning or ventilating air will pass through the interior conduit system into the room.

These walls may be provided with the inturned channel structures 26 and 27 for receiving reenforcing means.

The side structures E are closed by the end walls 28 so as to form a closed end structure, and these end walls 28 may be held in position by rods or bolts extending through the channels 26 and 27.

Between'the walls 23 will extend the pivot bolts G, held in position by means of the threaded end portions 29 and the nuts 30.

These pivot rods G may extend through the enlarged channel portions 31 at the edges of the vanes F, as is best shown in FIGS. 5 and 6, with the body 32 of the vane being relatively thin and flat and terminating in an enlarged end bead section 33.

As is indicated between the edges 34 of the plates, there will be small washers 35 fitting around the rods G.

The nuts 30 will also hold the washers 36 in position. (See FIG. 6.)

The rods 37 for holding the end walls 28 in position are also clearly shown in FIG. 6.

There will be two rows of these vanes F positioned in each channel 25 and they may be positioned as desired in any obliquity, to give the desired air distribution pattern.

The pivot mount for the entire barrel structure is best shown in FIG. 7 and it will be noted that there i a short 'bolt having a fillister head 56 in the end plate 28 of the barrel structure.

This bolt will be held in position by the nut 57 having the washer .58, which will clamp the upstanding flange J against the end wall 28 through the intervening stuffing, packing or sealing material 59.

The middle wall 60 separating the two channels 25 is clearly shown in FIG. 7 and it will be noted that it is released at 61 adjacent the pivot connection H.

The side frame structure, as best shown in FIGS. 3, 4 and 5, has the outstanding flanges 75, which carry the hinge plates I and also have the reenforcing elements 76.

The frame structures B and C terminate in the channel elements 77 having the inturned lip 78, which may engage the right angular connectors 79 having the insert legs 80, as best shown in FIG. 8.

The sealing is accomplished in respect to the frame A by means of sealing material which may be inserted in the channels 7'7 beyond the angle connector 79 in respect to the wall or ceiling.

In respect to the curved sides 20 0f the barrel structure E, the scaling is achieved by putting in gasket or sealing material 81, which will be held in position by the outstanding fianges 76 and which will press at its inside end 82 against the curved side walls 20 of the barrel structure.

This sealing material 81 will also act to stop the rotating movement of the barrel by contact with the flanges 22.

The flange structure A is held in position by means of the bolt holes 83 and 84 in the side structures C and D. (See FIGS. 1 and 2.)

The provision of the central lateral partition with adjustable deflecting or directional vanes, each individually independently adjustable on each side of the lateral partition, gives an altogether distinctive character to the device.

The device does not serve as only a discharge nozzle, but by adjustment of the individual directional vanes it makes possible diffusion and mixing of the incoming air with the room air to attain the diffusing feature promptly and effectively. The vanes above and below the partition in the preferred form when located in a side wall will enable attaining of a most valuable diffusing function beginning as the air enters the room.

These vanes cause a counterflow or crisscross pattern above and below the central partition with vanes being oppositely inclined on opposite sides of the partition with a thorough complete diffusing and mixing of the air as it is discharged horizontally into the room or at a slight angle to the horizontal toward or away from the ceiling.

This counterflowing or crisscross diffusion capability results in turbulence at the point of discharge which assures very rapid mixing with the room air thus equalizing temperature throughout the enclosure, eliminating drafts, particularly when there is substantial difference in temperature of 20 to 50 F. between the incoming and room which is quite characteristic of large size enclosures.

A further advantage of this counterflowing or crisscross flow is that there is achieved a rapid reduction of velocity thereby assuring thorough mixing within a very short interval.

The end beads on the vanes achieve noise elimination and aid in the mixing since they slightly compress the sides of streams of air as they leave the diffuser and then withdrawal within the side straight parallel walls assures that the effect will be achieved at the sides of the stream and not at the top and bottom of the stream of incoming air.

The top and bottom sides of the stream are kept substantially parallel to the horizontal or to the direction of adjustment of the cylindrical member which at the most is 5 to 15 toward or away from the ceiling.

Surprisingly, the noise of discharge is greatly reduced as well as the friction loss on the discharge with thorough complete diffusion.

The vanes enable both a directional effect as well as a diffusing and mixing effect.

The present diffuser permits wide adjustment to meet the conditions encountered due to the size, shape and height of the room or enclosure and the location of the persons working or living therein and in addition can be adjusted to accommodate itself to the seasonal requirements of cool air in summer or warm air in winter.

The diffusers may have lengths ranging from 7 to 36 inches and heights ranging from 3 to 13 inches with mouth sizes ranging from 6 to /2 inches in width and 6 to 34 inches in length and with vane sizes of about 3% inches in length and 1 /2 inches in width.

The vanes should have a length about 1 /2 times to 1% times the width thereof so that the directional effect of the vanes will be predominant with the sides of the duct holding the separated streams in parallelism along the long dimension of the diffuser.

The cylinders may have diameters of 6" or 10" and will give most desirable results at these dimensions.

These diffusers handle high velocity air and are quite different from grilles which only handle slowly flowing air.

These devices are particularly suitable for high ceiling rooms such as gymnasiums and churches where the devices are placed in the side walls and where the side walls are widely separated.

It is important that the vanes be pivotally mounted at the back where the air enters the diffuser so that the gaps between vanes will be the same at back but may vary at the front of the device. It is also desirable that the vanes be flat and straight.

A particularly unique feature of the present invention resides in the provision of the end deflection or directional elements which are shown as attached in FIGS. 5 and 9.

In FIG. 5 at the end walls 28 there are attached the deflectors 250 having the internal oblique face 251, the outside oblique face 252 and the inside attachment 253 and the outside attachment 254.

These may be made so that they are removable or so that they can be permanently positioned in each parallel ribbon row of jets. These jets are indicated by the arrows 555, 556, 557 and 258.

On the opposite side of the central partition 60 the jets will be in an opposite direction as indicated by the dot and dash lines whereas the elements 250 will be in the same position.

Inthe jet 258 the vane 32 and the wall 251 will provide for the direction of the jet whereas with the jet 555 the wall 252 and the vane F will provide for the direction of the jet.

FIG. 9, instead of the double angular elements 250 has the elements 260 provided which have a streamlined smooth inside face 261 moving to a peak 262 and then sharply descending to the corner attachment 264.

The corner attachment 264 with the corner attachment 263 will temporarily or permanently hold these vanes 260 in position on each side of the central wall 60. This will give a jet arrangement 265, 266, 267 and 268 which will be in oblique opposite direction on the other side of the wall 60 so as to give a thorough crisscross pattern and mixture of air.

FIGS. 10 and 11 and 12 show the effect which is achieved by these arrangements, using from four to twenty-four jets on each side of the central partition 60 or four to twenty-four vanes on each side of the partition 60.

For example, in FIG. 10 all vanes are straight and perpendicular to the horizontal axis and there is achieved a long throw of air. The throw will be as indicated at 296 between the dot and dash lines where neither element 250 nor element 260 is used. It will be as indicated by the brace line 295 when the streamlined element 260 is used. It will be as indicated by the dotted lines 297 when the angular member 260 is used.

The central line is indicated at 298 and the diffuser in the wall is indicated at 225.

In FIG. 11, the vanes are all set 30 left to give an angular projection of the jet and it will be noted here that the streamlined element 260 indicated by the dotted lines at 301 will give one pattern and the angular element 250 indicated by the solid lines at 301 will give another pattern, whereas the elimination of both elements 250 and 260 will give still a third pattern indicated at 302, in respect to the center line 304 and the diffuser 276.

In respect to FIG. 12 there is shown a short throw arrangement with the vanes set for making maximum diffusion with the vanes miss-crossing each other at an angle of about 3045. Here the stream-lined end pieces 260 will give a pattern 310, the angular element 250 will give the pattern 312 while the elimination of both elements 250 and 260 will give the pattern 203 in respect to the center line 304 and the diffuser 276.

These figures show the tremendous amount of variation that is possible in the distribution pattern.

It is thus apparent that the present invention has provided a simple, readily inserted, durable, extruded barreltype air diffuser, of widespread and universal applicability, permitting a wide range of control over both lateral and vertical distribution of incoming ventilating and conditioning air.

As many changes could be made in the above rotatable elongated air diffuser construction and many widely different embodiments of this invention could be made without departure from the scope of the claims, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed, what is claimed is:

1. A barrel-type air diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser comprising a rectangular frame for mounting against the periphery of a rectangular ceiling opening having side and end members connected together to form said frame and a rotatable elongated cylindrical barrel pivotally mounted therewithin having partial cylindrical outside bearing walls, said bearing walls forming the outside of said barrel and contacting and bearing against the inside edges of said side members, flat end walls and flat parallel inside vane carrying walls, said carrying walls being three in number and spaced inside of and carried by said bearing walls and extending lengthwise of said barrel, one of said carrying walls being a central wall and a plurality of adjustable rows of vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being so widely spaced from one another as to be capable of a swinging adjustment at their outlet sides through from one end side to the other end side, with the vanes on opposite sides of the central wall being oppositely directed to cause a criss-cross turbulent flow of air through and from the outlet side of the diffuser to cause mixing with the room air and lateral expansion of the flow of air through the outlet to both sides of the outlet and also within the space between said vane carrying walls, said vanes having enlarged pivotal end portions and pivot rods extending through said pivot end portions and through said carrying walls permitting each of said vanes to be independently adjusted, said deflectors being fixed in position at the end of the barrel and being oppositely angled with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the difluser, whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

2. A barrel-type air diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser comprising a rectangular frame for mounting against the periphery of a rectangular ceiling opening having side and end members connected together to form said frame and a rotatable elongated cylindrical barrel pivotally mounted therewithin having partial cylindrical outside bearing walls, said bearing walls forming the outside of said barrel and contacting and bearing against the inside edges of said side members and flat parallel inside vane carrying walls, said carrying walls being three in number and spaced inside of and carried by said bearing walls and extending lengthwise of said barrel, one of said carrying walls being a central wall, and a plurality of adjustable rows of vanes within the space between said vane carrying walls, said outside hearing walls and inside vane carrying walls being integrally extruded and said vanes being also integrally extruded and said frame having transverse extensions pivotally carrying said rotatable barrel, said vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being so widely spaced from one another as to be capable of a swinging adjustment at their outlet sides through 180 from one end side to the other end side, with the vanes on opposite sides of the central wall being oppositely directed to cause a criss-cross turbulent flow of air through and from the outlet side of the diffuser to cause mixing with the room air and lateral expansion of the flow of air through the outlet to both sides of the outlet and also having enlarged pivotal end portions and pivot rods extending through said pivot end portions and through said carrying walls permitting each of said vanes to be independently adjusted, said deflectors being fixed in position at the end of the barrel and being oppositely angled with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the diffuser, whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

3. A barrel-type air diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser comprising a rectangular frame for mounting against the periphery of a rectangular ceiling opening having side and end members connected together to form said frame and a rotatable elongated cylindrical barrel pivotally mounted therewithin having partial cylindrical outside bearing walls, said bearing walls forming the outside of said barrel and contacting and bearing against the inside edges of said side members and flat parallel inside vane carrying walls, said carrying walls being three in number and spaced inside of and carried by said bearing walls and extending lengthwise of said barrel, one of said carrying walls being a central wall, and a plurality of adjustable rows of vanes within the space between said vane carrying walls, said rectangular frame consisting of short end and long side exruded members having inside and outside faces and inside and outside edges and having outer channels on the inside faces at the outside edges of the members, corner connections engaging said outer channels to hold together the members to form said frame, and said side members on their inside faces at their inside edges having inside channels and gaskets in said inside channels sealing the inside edges of the side members to the partially cylindrical outside bearing walls, said vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being so widely spaced from one another as to be capable of a swinging adjustment at their outlet sides through 180 from one end side to the other end side, with the vanes on opposite sides of the central wall being oppositely directed to cause a criss-cross turbulent flow of air through and from the outlet side of the diffuser to cause mixing with the room air and lateral expansion of the flow of air through the outlet to both sides of the outlet and also having enlarged pivotal end portions and pivot rods extending through said pivot end portions and through said carrying walls permitting each of said vanes to be independently adjusted, said deflectors being fixed in position at the end of the barrel and being oppositely angled Q u with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the diffuser,

whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

4. A barrel-type rotatable double adjustable vane ceiling diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser for insertion in a rectangular opening in a ceiling comprising a rectangular outside flush frame consisting of extended flat short end and long side plates, each having oblique end abutment edges and an outside smooth face and an inside channeled face positioned against the periphery of the opening; said inside faces having outer channels, connections in said outer channels connecting said abutment edges and said inside faces of the long side plates having inner channels, gaskets in said inner channels and said short end plates having inwardly directed right angular flanges adjacent their inside edges on their inside faces serving as pivotal mounting plates, and a rotatable barrel type diffuser having a top side and a bottom side and having outside partial cylindrical walls, inside separated straight parallel spaced walls and a central transverse partitioning straight wall parallel to and equally spaced between said separated parallel walls and end transverse walls at the ends of and mounted on. said cylindrical and straight walls, said transverse walls being closely spaced parallel to and slightly inside of said right angular flanges, a flat gasket between said transverse walls and flanges, pivotal connections between said transverse walls and flanges and a plurality of pairs of adjustable vanes positioned between said straight walls, said vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being sufficiently widely spaced so that they are capable of a swinging adjustment at their outlet ends through from one end side of the diffuser to the other ends side of the diffuser, with opposite vanes of each pair being oppositely directed to cause a crisscross turbulent flow of air through and from the outlet side of the diffuser, and rods extending through the-inlet edges of said vanes and through the parallel walls serving as pivots for said vanes, said deflectors being fixed in position at the end of the barrel and being oppositely angled with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the diffuser, whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

5. The diffuser of claim 4, said vanes having enlarged beads at their top edges and bottom edges and transverse openings through said top edges for carrying said rods.

6. The diffuser of claim 4, said connections including right angular members having legs inserted in said outer channels to hold said abutment edges together.

7. The diffuser of claim 4, said pivotal connections and said rods being threaded and having end nuts on said threaded portions to enable variation in the tensioning of the pivotal connections and the rods serving as said pivots.

8. The diffuser of claim 4, said gaskets in said inner channels projecting inside of the long side plates and pressed against the outside faces of said cylindrical walls.

9. The diffuser of claim 4, said cylindrical walls having obliquely projecting outside flanges to contact said gaskets and act as stops.

10. The diffuser of claim 4, said cylindrical walls extending between one-fourth and one-fifth of the circumference of a cylinder.

11. The diffuser of claim 4, said straight spaced walls being extruded integrally with said partial cylindrical walls and said walls being each provided with enlarged edged portions to reinforce the same.

12. An adjustable rotatable double vane barrel type diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser including rectangular mounting frame having large side frame members and short end frame members secured to the periphery of a ceiling air discharge opening therein, said frame members being of extruded sections and each having a base portion disposed parallel to the supporting surface and having on their inside faces inner and outer extensions on the side face perpendicular to the base portion, said inner extensions on said short end members projecting into said openings, sealing means carried by the inner extensions of said side and end frame members within the said outer flanges thereof for sealing engagement with the barrel of said diffuser; and a central barrel within said frame consisting of double side, middle and end walls, said side walls each having an outer cylindrical segment wall portion and an inner plane straight wall portion, said side, middle and end walls being connected together at the ends of the barrel and said side and middle walls being in parallel spaced relation to form an air passage in combination with said end walls, the inner wall portions of each side wall merging with the outer cylindrical segment wall portion thereof at the outlet side of said passage; means securing said nozzle assembly to the frame between the said inner flanges of the frame end members for pivotal movement on a central longitudinal axis in the plane of said middle wall, pairs of transverse adjustable vanes between said side and middle walls extending the height of the side and middle walls, said vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being sufliciently widely spaced so that they are capable of a swinging adjustment at their outlet ends through 180 from one end side of the diffuser to the other end side of the diffuser, with opposite vanes of each pair being oppositely directed to cause a criss-cross turbulent flow of air through and from the outlet side of the diffuser; said sealing means being carried along the inner edges of each side frame member for engagement with the cylindrical segment wall portions of the nozzle assembly; and said sealing means interposed between the end frame inner extensions and the barrel end Wall; and stop means on the side walls for engagement with the frame side members for limiting movement of the nozzle assembly; and said sealing means interposed between the end frame inner extensions and the barrel end wall; and stop means on the side walls for engagement with the frame side members for limiting movement of the nozzle assembly about the pivotal axis thereof, said deflectors being fixed in position at the end of the barrel and being oppositely angled with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the diffuser, whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

13. An adjustable barrel type diffuser having an inlet side and an outlet side and having end sides at the ends of the barrel, said diffuser having a rectangular frame consisting of pairs of side and end members secured to a supporting surface around the periphery of a ceiling opening therein; a barrel assembly consisting of pairs of parallel side and end walls and an intermediate parallel wall, said side walls each having an outer cylindrical wall portion and inner parallel wall portions, the side and end walls together with the intermediate wall being connected together in spaced parallel relation and forming two elongated rectangular air passages, the inner and outer wall portions of each side panel being in spaced-apart relationship at the inlet side of said diffuser and joining together at the outlet side thereof; pivotal studs securing said assembly to said frame for turning movement on an axis longitudinal of the frame, midway between the side frame members and the outer cylindrical segment wall portions; flat inwardly projecting sealing means between said side frame and end members and said assembly, and pairs of independent adjustable transverse vanes between said side and intermediate walls, said vanes being pivotally mounted at their ends adjacent the inlet side of the diffuser and being sufficiently widely spaced so that they are capable of a swinging adjustment at their outlet ends through from one end side of the diffuser to the other end side of the diffuser, with opposite vanes of each pair being oppositely directed to cause a criss-cross turbulent flow of air through and from the outlet side of the diffuser, and sealing strips carried by the inside face of said frame for engagement with the outer cylindrical wall portions, said deflectors being fixed in position at the end of the barrel and being oppositely angled with the inlet portion of the deflectors extending convergently inwardly toward peaks projecting inwardly toward the vanes and the outlet portions of the deflectors extending divergently outwardly toward the end sides of the barrel so as to cause the air flowing out through the outlet side to expand laterally outwardly of the diffuser, whereby turbulent mixing of the air flowing out of the diffuser with the room air is obtained.

14. A diffuser according to claim 12 further characterized by angular connector means engageable with said outer extensions for retaining said side and end frame members in assembled relation.

15. A directionally adjustable air outlet according to claim 12 wherein the said means for connecting the side and end panels of the nozzle assembly comprise connecting elements engageable in each end of one of the side panels at three points defined by extruded apertures formed in the side panels at the intersection between the inner and outer wall portions thereof, at the discharge end of the air passage in the nozzle unit and at the end of each of said wall portions which lies at the inlet side of said air passage.

References Cited UNITED STATES PATENTS 2,724,320 11/1955 Tutt 984O 2,854,914 10/ 1959 Galbraith 98-40 3,012,494 12/1961 Drummond 98-40 3,176,603 4/1965 ODay et al 98-40 ROBERT A. OLEARY, Primary Examiner. W. E. WAYNER, Assistant Examiner. 

1. A BARREL-TYPE AIR DIFFUSER HAVING AN INLET SIDE AND AN OUTLET SIDE AND HAVING END SIDES AT THE ENDS OF THE BARREL, SAID DIFFUSER COMPRISING A RECTANGULAR FRAME FOR MOUNTING AGAINST THE PERIPHERY OF A RECTANGULAR CEILING OPENING HAVING SIDE AND END MEMBERS CONNECTED TOGETHER TO FORM SAID FRAME AND A ROTATABLE ELONGATED CYLINDRICAL BARREL PIVOTALLY MOUNTED THEREWITHIN HAVING PARTIAL CYLINDRICAL OUTSIDE BEARING WALLS, SAID BEARING WALLS FORMING THE OUTSIDE OF SAID BARREL AND CONTACTING AND BEARING AGAINST THE INSIDE EDGES OF SAID SIDE MEMBERS, FLAT END WALLS AND FLAT PARALLEL INSIDE VANE CARRYING WALLS, AND CARRYING WALLS BEING THREE IN NUMBER AND SPACED INSIDE OF AND CARRIED BY SAID BEARING WALLS AND EXTENDING LENGTHWISE OF SAID BARREL, ONE OF SAID CARRYING WALLS BEING A CENTRAL WALL AND A PLURALITY OF ADJUSTABLE ROWS OF VANES BEING PIVOTALLY MOUNTED AT THEIR ENDS ADJACENT THE INLET SIDE OF THE DIFFUSER AND BEING SO WIDELY SPACERD FROM ONE ANOTHER AS TO BE CAPABLE OF A SWINGING ADJUSTMENT AT THEIR OUTLET SIDES THROUGH 180* FROM ONE END SIDE TO THE OTHER END SIDE, WITH THE VANES ON OPPOSITE SIDES OF THE CENTRAL WALL BEING OPPOSITELY INDIRECTED TO CAUSE A CRISS-CROSS TURBULENT FLOW OF AIR THROUGH SAID FROM THE OUTLET TO BOTH THE DIFFUSER TO CAUSE MIXING WITH THE ROOM AIR AND LATERAL EXPANSION OF THE FLOW OF AIR THROUGH THE OUTLET TO BOTH SIDES OF THE OUTLET AND ALSO WITHIN THE SPACE BETWEEN SAID VANE CARRYING WALLS, SAID VANES HAVING ENLARGED PIVOTAL END PORTIONS AND PIVIT RODS EXTENDING THROUGH SAID PIVOT END PORTIONS AND THROUGH SAID CARRYING WALLS PERMITTING EACH OF SAID VANES TO BE INDEPENDENTLY ADJUSTED, SAID DEFLECTORS BEING FIXED IN POSITION AT THE END OF THE BARREL AND BEING OPPOSITELY ANGLED WITH THE INLET PORTION OF THE DEFLECTORS EXTENDING CONVERGENTLY INWARDLY TOWARD PEAKS PROJECTING INWARDLY TOWARD THE VANES AND THE OUTLET PORTIONS OF THE DEFLECTORS EXTENDING DIVERGENTLY OUTWARDLY TOWARD THE END SIDES OF THE BARREL SO AS TO CAUSE THE AIR FLOWING OUT THROUGH THE OUTLET SIDE TO EXPAND LATERALLY OUTWARDLY OF THE DIFFUSER, WHEREBY TURBULENT MIXING OF THE AIR FLOWING OUT OF THE DIFFUSER WITH THE ROOM AIR IS OBTAINED. 